﻿using System;

class cs1
{
    static void Main()
    {
        Console.Write("请输入月份：");
        int month = Convert.ToInt32(Console.ReadLine());


        long pair1 = 1; 
        long pair2 = 1; 

        for (int i = 1; i <= month; i++)
        {
            if (i == 1 || i == 2)
            {
                Console.WriteLine($"第{i}个月：兔子对数为 1");
            }
            else
            {
                long current = pair1 + pair2;
                Console.WriteLine($"第{i}个月：兔子对数为 {current}");
                pair1 = pair2;
                pair2 = current;
            }
        }
    }
}